Every so often, science produces an idea so strange it sounds made up. This is one of them: researchers once seriously proposed that people eat Teflon — the same slippery non-stick coating on your frying pan — as a zero-calorie food filler. It even won recognition, in the tongue-in-cheek way these things sometimes do.
The logic, believe it or not, wasn’t insane on the surface. Teflon (chemically, PTFE) is famously inert. It’s so unreactive that your body can’t digest it or extract any energy from it at all. So the thinking went: mix a bit of this indigestible, calorie-free powder into food, and you could bulk up a meal, help people feel full, and add zero calories in the process.
There was even data behind the idea. Decades ago, studies were run where rats were fed diets containing a substantial percentage of Teflon. The rats reportedly lost weight, and the early experiments didn’t show obvious signs of poisoning. On paper, someone looked at that and thought: a zero-calorie filler to fight obesity.
It was actually patented as a potential meal additive. For a brief moment, edible Teflon looked like it might have a future on the shelf next to artificial sweeteners and fat substitutes.
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